Report - 琵琶湖の水位ものがたり - 水資源機構...琵琶湖の水位って何だろう？. －1.5 (m) －1.0 －0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 明治7年 M17 M27 M37 大正3

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